I'm with mukade in not really understanding what you're asking. If you're asking if you can string words together in ways that they aren't usually used, then yes you can. However, just like in English, they're not going to make any sense. Additionally, if you're a foreigner saying/writing that, you have the extra hurdle of making people understand that you're not making a word choice mistake, but rather that you're trying to do something wierd with the language.

However,
Just like in English there are poetical/metaphorical phrases. ｢君が私の心にいる」etc, but you have to know what you're doing. In your previous post you said Blood o'clock. It just sounds really silly (no offense). However, your use of "time of blood" or something sounds much better. You could definately do something like that in Japanese 血の時代.

Because the meaning of such things are abstract, I doubt there are any hard and fast rules about such, just as there aren't in english. However, just combining random kanji together to try and create a phrase is probably not the best way to go about it.

A girl is walking down a dark alley, she had just got finished arguing with her widowed mom. Holding a bible in her hand, she's confussed, she doesnt know weither to beleive in this thing that people call "God" and she is afraid that he doesnt exist. She prays in the alley, hoping that someone will hear her. She decides that the only way she will ever figure out the truth is to take her own life. And her time of death will tell her if she goes to heaven or hell, in the hour of her death, blood of her life draining. Its her blood which is drifting with her soul. (When docters talk about time of death , its kind of like that ex. Dot: 12:00.) so her time of death would be when her blood spilled. not given an exact existant time yet an abstracticy. Which is her blood. which is Blood O'clock. I know its not very interlecual to combine random strings of kanji, thats why I ask about this. I have many abstract ideas for stories. I am very deep in my writings. And I wish to know how to produce such feeling in a language such as Japanese.

Don't take this wrong... Remember that I used to be a newspaper editor and a magazine editor, and am a former member of SFWA (Science Fiction Writers of America). I used to read submissions and buy short fiction for publication.

Before thinking about coining some funky and confusing neologisms, think more about plot and what you're writing (to say nothing of spelling, grammar, and syntax).